Shoe press



Allg@ 13, 1935;- J. o. YUNKER 2,011,430

SHOE PRESS Filed July 15, 1933 shoes.

Patented Aug. 13, 1935 UNITED STATES PATENT OFFICE SHOE PRESS John 0. Yunker, Wauwatosa, Wis. Application July 15, 1933,1Seial N0. 680,580

12 Claims.

wear, Which is simple and compact in construction, readily manipulable, and highly efcient in operation.

It has heretofore been proposed as in my copending application Serial No. 569,388, filed October 17, 1931, and in'my Patent No. 1,943,356,

granted January 16, 1934, to cement soles into intimate contact with footwear by causing the soles to rest upon resilient pads formed of rubber, and by forcing the footwearn toward the soles with the aid of adjustable screws coacting with pressure blocks and lasts disposed Within the 'Ihe reaction pads used in these prior devices were of the pneumatic type containing air chambers completely enclosed within the rubber, and it was also proposed to apply heat within the shoes being soled, in order to augment the adhesive action of the cement. While these prior devices are relatively satisfactory and have met with extensive commercial success, the reaction pads are rather difficult to manufacture and are therefore quite costly; and it is also quite impossible in attaching `the soles to certain kinds of relatively thin and flexible footwear, to insure effective attachment of the rear portions of the soles. s

It is therefore a more specific object of the present invention to provide improved apparatus for overcoming these objectionable features of the prior devices of this general type.

Another specific object of theinvention is to provide an improved resilient reaction pad struc- .ture forshoe sole presses, which is simple and durable in construction, and which is moreover relatively effective in use. f

A further specific object of the invention is to provide improved instrumentalities for insuring effective attachment of all portions of the soles to all parts of the footwear with whichthe soles. coact.

An additional specific object of the invention is to provide an improved adjustable last especially adapted for use in conjunction with shoe sole presses or the like.

Still another specific object of the invention is to provide an improved pressure block structure for shoe sole presses or Ithe like, and means for heating a last coacting with the block.

Another specific object o! the invention is to provide an improved combination last and pressure block for sole attaching machines, which will enable more eective cementing of soles to various types of footwear. f

A further object of the invention is to provide various improvements in the details of constrlice tion of shoe sole attaching presses', whereby the manufacture. thereof is simplified, while the ef- -flciency is enhanced to a maximum.

'I'hese and other objects and advantages will be apparent from the following detailed description.

A clear conception of embodiments of theseveral features of this invention, and of the mode of constructing and of utilizing shoe soling presses builtin accordance with the improvement, may s I be had by referring to the drawing accompanying and forming a part of this specification in which like reference characters designate the same or similar parts in the various views:

Fig. 1 is a part sectional front elevation of one of the improved shoe sole cementing presses;

Fig. 2 is a longitudinal vertical section through one of the reaction pads and through the corresponding metal portions of the press;

Fig. 3 is a top view of the improved press;

Fig. 4 is a fragmentary longitudinal vertical section through a portion of the improved press, showing a modified form of reaction pad;

Fig. 5 is an enlarged top view of one of the4 improved metal lasts; and

Fig. 6 is a similarly enlarged part sectional side view of the improved combination last and pressure block.

While the invention has been shown and described herein as being specifically applied to a portable duplex unit especially adapted for use #in repairing shoes or other footwear, it will be'apparent that some of the features are more generally applicable to other types of presses for originally attaching the soles. It should also be rememberedl that some of the novel features of 4o shoe sole press construction, shown and perhaps described but not specifically. claimed herein, form the subject of the two copending applications specifically identified hereinabove.

The improved duplex shoe sole attaching ma- 45 chine illustrated in Figs. 1, 2 and 3, comprises generally a base 8 rotatably mounted upon a standard 9 and having a yoke I0 rigidly 'attached to the top thereof; a pair of" resilient reaction pads Il detachably supported in recesses formed 50 inthe top of the base 8; a pair of vertical screw threaded spindles I2 adjustably associated with hubs formed upon the yoke I0 above the pads Il; one or more pressure blocks I3 having detents A cooperable directly with the pointed lower ends the rear sidewalls 4,of the block I3, and is provided with cut-out device 21 for preventing over-heating.

2 of the spindles l2; and one or more metallic lasts I4 formed for cooperation with the lower portions of the pressure blocks I3 and with the upper interiors of the sole portions of the shoe I5 being repaired. 1

The base 8 may be formed of vcast iron or aluminum, and is rotatably attached to screw threads at the upper end of the standard 9 which may be formed of a suitable length of pipe having a relatively large and heavy base plate I6 permanently secured to the lower end thereof. The yoke I may likewise be formed of cast iron or aluminum and is rigidly bolted to the base 8 rearwardly of the pivotal axisas shown in Fig. 3, and the pad confining recesses in the top of the basev 3 are bounded by vertical side walls i1 and concave bottoms I8 as shown in Figs. 1 and 2, and

I1 are provided with depressions I9 for accommodating the heels of footwear being soled.

The resilient reaction pads I I specifically shown in Figs. 1, 2 and 3, are each constructedy of a heavy upper and side bearing portion 20 of firm but flexible rubber, and a lower inner core 2l of relatively softer highly resilientl material such as sponge rubber. The sides of the heavy bearing portion 2D of each pad II, coact directly with the side walls I'l` and with the edge portions of the concave bottom I8 of the corresponding pad conlining recess, and the core 2l may be formed of any desired thickness and reacts against the cen- 'tral portion of the concave bottom I8 thus providing considerable cushioning effect. The pads II may be readily inserted within or removed from their confining recesses within the base 8, but snugly fit these recesses after insertion thereof. The rear depressions I9 are not of suiiicient extent to prevent such snug confinement of the pads II, land as previously indicated, these depressions merely provide proper heel clearances.

The pressing spindles I2 are movable toward and away from the pads II with the aid of a handle 22, only one of which need be provided, and which is detachably cooperable with the iiattened upper ends 23 of the spindles I2, ,and the handle 22 may be provided with a weight 24 for 'facilitating spinning of the spindle I2 with which the handle is associated. As previously indicated,

the lower spindle points are cooperable with any one of aseries of detents 25 formed in the upper arm of the pressure block I3, and the detent 25 actually selected for such cooperation depends upon the size and style of shoe I being operated upon. I'he lower arm of the pressure block I3 may engage the upper inclined surface of the last I4 either directly, or indirectly through an electric heater 26, depending upon whether or not it is desired to apply heat .in order to hasten the cementing operation. The heater 26 may be loosely applied or permanently attached to the lower arm a safety The pressure block I3 may be formed of any suitable metal, and besides having the heater 26 attached thereto, if used, this block has an integral rear projection 2B which is threaded for the reception of an adjustable rod 29; The upper end of the rod 29 is provided with a manipulating hand wheel 30, and the lower end thereof carries a universally movable pressure plate 3|.

The plate 3| is adapted to coact with the rear swingable section 32 of the last I4, and this section 32 is pivotally attached to the forward main section by means of a pin 33 so that the section 32 may be readily adjusted by moving the rod 29 either while the block I3 and last I4 are witbin or outside of the shoe I5. rIhe last I4 and its movable section 32 may be formed of aluminum or the like, and the main section of this last may either be formed solid or ribbed, and has relatively inclined lugs 34 at the forward end thereof for preventing the pressure block I3 from sliding forwardly over the end of the last.

When the improved press has been properly assembled as shown in Figs. 1, 2 and 3, the device may be utilized to quickly and effectively attach soles to footwear, in the following manner. The sole and the surface of the shoe I5 to which it is to,be attached, vmay first be properly prepared, after which adhesive such as liquid cement may be applied and the shoe I5 and sole positioned with the sole in contact with the top of the pad I I and theA corresponding spindle I2 in coaetion with a pressure block I3 and last I4 cooperat ing with the interior of the shoe I5. The handle 22 may then be manipulated to force the pressure block/"I3 and the last I4 downwardly against the sole, whereupon the resilient padI I coacting Withithe outer sole will be distorted as shown, by virtue of the sponge rubber core ZI coacting with the concave bottom I8 of the pad confining recess. This distortion of the pad II will cause pressure to be uniformly applied to the outer sole throughout the entire forward portion thereof, and in order to also insure proper application of pressure to the rear portion of the sole, the hand wheel 30 may be utilized. By turning this hand wheel 30, the threaded rod 29 will be moved downwardly, causing the plate 3| to force the hinged last section 32 against the interior shank and heel portions of the shoe I5. The shank and heel portionsmay thus be forced yinto intimate contact with the' rear portion of the pad II to insure thorough cementing of the rear part of the sole, andthe depression I9 will accommodate the heel of the shoe during this operation. If so desired, the heater 26 may be employed to hasten the cementing operation, and the safety device 21 will prevent overheating and possible scorching,

While the pad construction shown in Figs. 1, 2'andv3 has been found to be a satisfactory substitute for the hydraulic and pneumatic pads previously used, a pad II such as shown in Fig. 4 may also be utilized. The pad I I merely comprises a relatively heavy body 20 of comparatively stifl' but iiexible rubber having an open space 2|' in the underside thereof. The side walls of this pad II are adapted to snugly engage the side walls 'I1 of the corresponding pad confining recess in the base 8', and rest upon the edge portions of the concave bottom I8 so that when the pad I I is in place, the space 2| is substantially sealed. this modified pad I I', the confined air within the space 2l' acts as an internal cushion and cooperates with the rubber body 20' to effectively apply and distribute the upward pressure acting upon the outer sole of the shoe I5, and the adjustable hinged 'last I4 may also be utilized with considerable advantage in conjunction with this type of pad.

From the foregoing description it will be apparent that the present invention provides irnproved pad structures which may be readily utilized in substitution for the more expensive and less durable hydraulic and pneumatic pressure pads heretofore used, to produce effective cementing of the soles. The improved adjustable last and pressure block, may be caused to cooper- When pressure is applied toy block I3 is formed entirely ate with the resilient reaction pads, to insure proper application of pressure at the rear portions of the soles, and the adjustment of the hinged last section may obviously be effected either before or after the shoe I has been applied to the press proper. Since the pressure independent of the` last structure, and merely rests loosely upon the upper surface of the last, it is preferable to force the hinged last section 32 against the heel portion of the shoe I5 after the shoe, last, and pres- :sure block have been assembled in the press,

whereupon the hand Wheel 30 may be adjusted to produce any desired degree of additional pressure upon the heel portion of -the shoe independently of the pressure being applied through 'the main last I4. 'Ihe straight upright side wall I1 and the concave bottom I8 cooperate to insure most effective and .uniform distribution of the pressure regardless-of, the type of reaction pad which is used, and the improved pads may be utilized in machines built originally for the reception of standard pneumatic pads.

It should be understood that it is not desired to limit the invention to the exact details of construction and to the precise mode of operation herein shown and described, for various modiications within the scope of the claims may occur to persons skilled in the art.

It is claimed and desired to secure by Letters Patent:

1. In combination, means for applying resilientA pressure to an outer sole coacting with a shoe along a cement coated surface, a lastcoacting with the interior of the shoe and having a section movable toward the shank portion of the shoe, a pressure block coacting with said last, and adjustable means carried by said block and cooperable with said movable last section to force the latter against the shank portion of the shoe independently of the pressure applied through said block.

2. In combination, means for applying resilient pressure to an outer sole coacting with a shoe along a cement coated surface, a last having a main section cooperable with the interior solev portion of the shoe and having a pivotally mounted section swingable toward and away from the shank portion of the shoe, a pressure block coacting with saidniain last section, and adjustable means carried by said block for swinging said pivoted section relative to the shank of the shoe.

3. In combination, a resilient reaction pad, a last cooperable vwith a shoe resting upon said pad, said last having a section movable directly toward and against the shank of the shoe independently of the remainder of the last, and adjustable means for moving said section relative to the remainder of the last While. the latter is in pressing engagement' with a shoe.

4. In combination, a resilient reaction pad, a last insertable within a shoe resting upon said pad, wtid last having a pivoted section swingable toward the shank of the shoe independently of the remainder of the last, and adjustable means manipulable while the last is in pressing engagement with a Vshoe to swing said pivoted section toward the shank of the shoe.

5. In combination, a resilient reaction pad, a. last cooperable with a shoe resting upon' said pad and having a section swingable toward the shank of the shoe, and a pressure block coacting with said last and having means for swinging said sec-'- tion.

6. In combination, a resilient reaction pad, a last cooperable directly with the' inner wall of a shoe resting upon said pad and having a pivoted rear section swingable toward the shank of 4the shoe, a pressure block coacting with said last and having a rearwardly extending portion, and adjustable means carried by said rearwardly extend-l ing portion and cooperating with said swingable last section.

'7. In combination, means for applying downward pressure against the inner sole of a shoe, and a resilient pad cooperable with the outer sole of the shoe, said pad comprising an outer casing having a top and side walls of relatively still iiexible rubber and a core of spronge rubber confined within said walls and disposed beneath said top.

8. In combination, means for applying downward pressure upon the inner Wall of a shoe, an elastic pad cooperating with the outer sole of the shoe, and `pivotally supported means movable relative to said pressure applying means and toward the shank portion of the shoe while said pressure applying means is eifective.

9. In combination, a base having a recess provided with a central concave bottom, a resilient pad conned within said recess and coacting with said bottom, a last coacting with a shoe resting upon the central portion of said pad, and means for forcing a portion of said last into intimate engagement with the shank of the shoe to force said shank toward the adjacent portion of said pad.

I 10. In combination, a base having an inclined surface, a resilient pad resting against said surface and having an upper surface above said inclined base surface cooperable with the rear of the outer sole of a shoe, a last cooperable with the interior of the shoe and having a section movable toward said base surface, means for moving said section, and independent means for forcing said last toward the shoe. P 11. In combination, a base having an inclined surface, a. resilient pad resting against said surface and having an upper surface above said inclined base surface cooperable with the rear of the outer sole of a shoe, a last cooperable with the interior of the shoe and having a pivoted section movable toward said base surface, means for swinging said section relative to said last and against the, shank of the shoe, and means for forcing said last and said section toward the shoe. Y 12. In combination, means for applying pressure downwardly upon a shoe, and a pad for coacting with' the outer sole of the shoe, said pad comprising an outer casing having a top and side Walls formed of relatively stii material a'nd having a cushion portion conned within said walls and disposed below said casing top, and a, frame coacting with said casing walls and with said cushion portion to provide an elastic cushion.

JOHN O. YUNKER. 

